Smats, Be grateful that it does because it almost wiped out all of my programs prior to receiving the the same error message. It seems to have gone into batch mode uninstall (when attempting to uninstall one particular program) and then attempted to uninstall all my programs when it fortunately crashed. It's taken me a system restore to get things back in order.

Today's giveaway is up against some serious, credible competition, both free and paid-for.

At a retail $14.99, it faces Revo PRO, whose developer is almost always having some kind of sales promotion (and especially at holiday time.)

As a giveaway today but with a potential re-install cost tomorrow, it must also contend with the always free Revo Free (which, last time I checked, didn't handle x64 OSs at all well, hence why I've never recommended it for those systems -- but perhaps it's improved?)

which has been around for several years now and, in my experience, has consistently out-performed Revo Free. I've no idea why Geek continues to be so relatively unknown, seeing as how it's not only 100% free, but 100% portable: no install necessary.

Thanks then, GOTD, and thanks, too, to doyourdata, for the kind offer, but with freeware Geek and RevoFree and commercialware RevoPRO already out there for a long-ish time, today's Uninstaller Pro is really hobbled by that sticker price and absence of provenance. I'll pass.

*Hmmmm !* I downloaded this program, despite no comments here, 'cos I wanted to strip ~10GB of Windows.old files which I wanted to permanently dump into the "bit bucket" - but a quick check does NOT reveal any access to this compendium of files.

It is *NOT* particularly helpful to attempt to separately try to delete *&* get "You require permission from TrustedInstaller to make changes to this folder".

It is "locked up" so tight that this free download and the utility "Unlocker" that I have had for years - neither of them work to rid me of this dross.

Memo to all: It seems that this program will not work as I had expected.

Old China Hand,
First things first: If you think you might want to downgrade from Windows 10 back to the previous version, don't delete that folder. Uninstall programs will not remove the Windows.old folder or previous Windows installation.

Second, unless you're seriously strapped for space on your hard drive, you don't have to do anything: Windows 10 will automatically delete the Windows.old folder one month after you performed your upgrade.

If you'd rather not wait -- if you want to reclaim that storage now -- you can delete the folder immediately, though not in the way you might expect. Indeed, if you simply click the folder and then press the Delete key, Windows will tell you you need permission, yada-yada, etc.